[Bronchitis symptoms in municipal personnel of Rotterdam].
D000328:Adult; D000367:Age Factors; D000368:Aged; D000397:Air Pollution; D001991:Bronchitis / Q000453:epidemiology*; D006801:Humans; D008875:Middle Aged; D012907:Smoking; D013147:Spirometry
Bronchitisklachten bij Rotterdams gemeentepersoneel.